Laundry management system for washing machines

• US 5,390,385 A
• Filed: 05/28/1993
• Issued: 02/21/1995
• Est. Priority Date: 05/28/1993
• Status: Expired due to Fees

• Current Assignee: Knight LLC
• Original Assignee: Knight Equipment International, Inc.
• Inventors: Beldham, Paul M.
• Primary Examiner(s): Coe, Philip R.
• Application Number:
  US08/068,761
• Time in Patent Office: 634 Days
• Field of Search: 8/158, 8/159, 68/12.01, 68/12.18, 68/12.23, 68/12.27, 68/17 R, 68/27, 134/57 D, 134/58 D
• US Class Current: 8/158
• CPC Class Codes: D06F 39/022 in a liquid state D06F39/024 takes precedence
• CPC Class Codes: G05B 19/0426 Programming the control sequence
• CPC Class Codes: G05B 2219/23414 Pc as detachable program, debug, monitor device for control system
• CPC Class Codes: G05B 2219/24055 Trace, store a working, operation history
• CPC Class Codes: G05B 2219/2633 Washing, laundry
• CPC Class Codes: G07C 3/00 Registering or indicating the condition or the working of machines or other apparatus, other than vehicles

Abstract

A system is provided for managing washing machines, and controlling laundry chemical dispensers. The system enables a user to choose controls, such as: automatically select, change, increment and monitor formulations used in a specific washing machine, or in a group of machines; flush out chemicals to the washing machine in conjunction with a low level indicator; select a specific washing machine out of a group of machines for a different operation; a power reset following a spike detection, power surge or a brownout; readings for: hot and cold water consumption, drain output, and steam output; the use of a plurality of machines to perform a series of washings using a sequence of chemicals; and, print-out times, and dates associated with the operation of each machine in a series of machines. The control system is regulated by an input keyboard, and specific operations may be recorded by a printout, viewed on a screen, or both.

Claims

1. A process for monitoring and controlling washing machines and operations therefor, comprising:

a.) controlling the washing machines with a controller board and an associated programmable microprocessor, using a program stored therein, the controller board being adapted to receive and store data and times corresponding to the washing machine operations;

b.) formulating and revising the program by means of a computer, including a memory and an associated input keyboard connected to the computer, the computer being adapted to feed the programs, and revisions thereto the controller board;

c.) interrogating the controller board for data from the washing machine operation contained therein, the computer and keyboard being detachably mounted to the controller board and to output means comprising a printer or display means connected to the computer;

d.) automatically selecting the appropriate chemical dispensing formulae stored in the controller board via formula select status signals from the washing machine at the commencement of each new wash load cycle; and

,

e. ) feeding chemical formulae from chemical containers to pumps connected to the washing machines, the pumps being adapted to receive pumping instructions from the controller, and to transmit pumping operations data to the controller board.

2. The process of claim 1, comprising printing out a time associated with a given washing machine function.

3. The process of claim 1, comprising indicating on detachable display means connected to the washing machine, the operational status of the pumps and, the status of washing machine components including:

door interlock operation, the use of steam, drain, and hot and cold water, the display means being connected to the controller board for providing data thereto.

4. The process of claim 1, comprising indicating on detachable display means connected to the controller board the said display means being adapted to feed operational data to the pumps, including:

formula number display, formula guides, formula select and display, pump displays for indicating which pumps are in operation, and a bleach defeat control.

5. The process of claim 1, comprising setting a timing signal by washing machine door interlock means following closure of the washing machine, and prior to turning on the washing machine operations, the timing signal initiating commencement and duration times, including:

water flush for chemical delivery times, hot and cold water flow times, chemical feed times, multilevel fill times, steam times and, cold water flush times.

6. The process of claim 1, comprising flushing water through chemical delivery lines from the containers of the chemicals by means of the pumps, thereby reducing or removing excess or residue chemicals from the delivery lines connecting the pumps and the washing machines.

7. The process of claim 1, comprising actuating the flush means by means of a solenoid, the flush means including a manifold for receiving the flushing water.

8. The process of claim 1, comprising providing timing pulses from the controller board to determine the volume of chemical fed to a specific washing machine through a specific delivery line by a specific pump, thereby enabling an output flow calibration for the system.

9. The process of claim 1, in which the washing machines and operations comprise tunnel washing operation.

10. The process of claim 1, including multi-level filling of formulae components, comprising adding multiple small fills of formulae at timed intervals during a washing machine operation, thereby reducing the possibility of deleteriously affecting laundry contained in the washing machine due to sudden contact with large amounts of chemicals.

11. The process of claim 1, in which the chemical dispensing formulae are stored in the computer.